Transnet BW develops new hybrid grid booster tech
New battery and hydrogen turbine combo developed in Germany promises stable power supply during peak demand and renewable energy fluctuations.
Image for illustrative purposes
Germany: German transmission system operator Transnet BW has developed a new hybrid grid booster technology that combines battery energy storage with a hydrogen-capable gas turbine to improve grid stability.
The innovation is the result of the state-funded HydrogREenBoost project, carried out in partnership with Karlsruhe Institute of Technology (KIT), Ulm University of Technology (THU), and the Center for Solar Energy and Hydrogen Research Baden-Württemberg (ZSW).
The hybrid system is designed to act as a flexible buffer during times of high electricity demand or when renewable energy output fluctuates. It helps avoid costly redispatch measures like curtailing renewables or turning on backup fossil fuel plants.
The components were successfully tested in a grid lab at THU, where the battery system ramped up from standby to full power in just 2.4 seconds, and was then smoothly replaced by the hydrogen turbine after 25.4 minutes, proving the system’s flexibility and low emissions.
One promising scenario studied involves a 500 MW plant with a 176.5 MWh battery and a turbine connected to the gas grid. This setup could repay its investment in three to seven years, depending on grid conditions.
Michael Jesberger, technical director at Transnet BW, said the project offers “important insights for the efficient and cost-effective use of new technologies in the transmission grid.”
The company is calling for further research, pilot projects, and support to enable wider adoption of hybrid grid booster systems as part of the energy transition.
Source: SEI
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